666379017496 has 64 divisors (see below), whose sum is σ = 1280470435200. Its totient is φ = 324971108352.

The previous prime is 666379017481. The next prime is 666379017539. The reversal of 666379017496 is 694710973666.

It is a super-2 number, since 2×666379017496² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311828140 + ... + 311830276.

It is an arithmetic number, because the mean of its divisors is an integer number (20007350550).

Almost surely, 2^666379017496 is an apocalyptic number.

It is an amenable number.

666379017496 is a deficient number, since it is larger than the sum of its proper divisors (614091417704).

666379017496 is a wasteful number, since it uses less digits than its factorization.

666379017496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676 (or 4672 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 666379017496 in words is "six hundred sixty-six billion, three hundred seventy-nine million, seventeen thousand, four hundred ninety-six".